Sentences with phrase «wild fish populations»

Among other things, the MSC seeks proof that wild fish populations can endure current levels of exploitation, and that the fishery is not laying waste to other species or ecosystems.

Journal: K. A. Hicks et al.. Reduction of intersex in a wild fish population in response to major municipal wastewater treatment plant upgrades.

Not exact matches

AquaCo Farms has a grow - out facility designed to be one of the largest, most sought after and credible fish source for Pompano, with zero impact on the wild population.

Partners working to save black - footed ferrets from extinction, and recover a healthy population back to the wild include Lincoln Park Zoo, The Smithsonian Conservation Biology Institute (SCBI), U.S. Fish and Wildlife Service, Louisville Zoological Garden, Cheyenne Mountain Zoo, Phoenix Zoo and Toronto Zoo.

These domestic traits are good for producing fish for the table, but not for the stability of wild populations.

Our work shows that farm fish are as potent at the gamete level as wild fish, and if farm escapes can revive their spawning behaviour by a period in the wild, clearly pose a significant threat of hybridisation with wild populations.»

A new analysis of 600 fish populations (including the bluegill, pictured), reported online today in Nature, suggests that large guts help fish deal with feast or famine conditions in the wild.

But others suggest that the health of some of the region's salmon populations — such as bountiful pink salmon off of Oregon and Washington and still thriving Alaskan runs — shows that with proper management we may be able to retain lively populations of both wild salmon and fishers.

Salmon farms were already known to weaken wild populations by exposing them to lice infestations, interbreeding with escaped farmed fish, and contaminants such as antibiotics, pesticides, and disinfectants.

It turns out that within five to 11 generations of fish (about 25 to 50 years), the foreign genes introduced into wild populations through hybridization are removed by natural selection.

These are some of the questions that the U.S. Fish and Wildlife Service (FWS) says it needs to answer before it can decide whether to continue managing the only population left in the wild.

In the meantime, Halvorsen hopes that the new rules, involving stricter size limits for which wrasse can be caught, will be accepted, leaving more fertile fish in the sea to replenish wild populations.

That means fish populations previously bolstered by hatchery stock are, genetically speaking, indistinguishable from purely wild populations.

«A fully annotated salmon genome will provide important information about the impact of cultured fish escapees on wild populations, about preservation of populations that are at risk, about strategies for fighting pathogens, and about environmental sustainability issues,» says ICSASG chair Dr. Steinar Bergseth at the Research Council of Norway.

Biologists at the Ash Meadows Fish Conservation Facility, less than a mile from Devils Hole, have successfully established a reserve pupfish population that is now reproducing on its own in a 100,000 - gallon refuge tank designed to replicate the species» home in the wild, right down to its shape and temperature.

Because farmed fish are raised on unnatural diets and in small enclosures they often breed disease, which can pass to wild populations.

If they interbreed with the wild fish it can result in a less genetically diverse, and therefore less robust, population.

«If raised correctly, [farmed salmon] can help meet global demand for high - quality protein and take some of the pressure off of highly depleted populations of wild fish.

These fish can spread disease to wild populations, and harm nearby ecosystems.

Large tidal activity and clean cold water support healthy populations of wild salmon and bottom fish.

In the 1980's, due to a decreasing population, the U.S. Fish and Wildlife Service began a captive breeding program teaming with the Los Angeles Zoo and the San Diego Wild Animal Park.

But Brice Semmens, an assistant professor in the marine biology research division at the Scripps Institution of Oceanography in La Jolla, said sportfishing generally does not affect populations of wild fish nearly as much as commercial fishing.

As they gazed out over the great island that had lost its forests two thousand years ago, and looked out over the sea whose wild tuna fish populations have been diminished by 96 %, and enjoyed the fresh air that now contained 385 ppm of CO2, and maybe more, and at night looked at the stars through a thinned ozone layer they must wonder what went wrong.

We are also putting enormous pressure on populations of wild species, both by hunting in the developing world and by large - scale industrial fishing in our seas.

He was awarded the Goldman Prize in 2007 for his efforts to protect dwindling wild salmon populations from over fishing.

Throughout the latter part of the 20th century, the once - plentiful wild salmon populations in the chilly waters of the North Atlantic dwindled to dangerously low levels, affecting not only the sensitive ocean and river ecosystems of the region, but also the rural communities for whom salmon fishing is a long - held local tradition and source of income.

Orri Vigfusson won the Goldman Prize in 2007 for his efforts to protect dwindling wild salmon populations from over fishing.

Chapter 2 Data: Population Pressure: Land and Water (XLS PDF Highlights) World Grain Production and Consumption, 1960 - 2009 World Grain Consumption and Stocks, 1960 - 2009 Wheat - Oil Exchange Rate, 1950 - 2008 Wheat Production in Saudi Arabia, 1960 - 2009, with Projection to 2016 Grain Harvested Area Per Person in Selected Countries and the World in 1950 and 2000, with Projection to 2050 U.S. Corn Production and Use for Fuel Ethanol, 1980 - 2009 Countries Overpumping Aquifers in 2009 World Irrigated Area and Irrigated Area Per Thousand People, 1950 - 2007 World Population of Cattle, Sheep, and Goats, 1961 - 2007 Livestock and Human Populations in Africa, 1961 - 2007 Livestock and Human Populations in Nigeria, 1961 - 2007 Livestock and Human Populations in China, 1961 - 2007 World Total and Per Person Wild Fish Harvest, 1950 - 2007 Top of Page

Blooms there have severely reduced fish populations and turned wild streams into sludge pits.

Experts agree that as wild fish stocks decline and the world's population grows we will increasingly rely on aquaculture to feed the hungry planet.